Wet-spun poly(ionic liquid)-graphene hybrid fibers for high performance all-solid-state flexible supercapacitors

doi:10.1016/j.jechem.2018.10.007

能源化学(英文) ›› 2019, Vol. 28 ›› Issue (7): 104-110.DOI: 10.1016/j.jechem.2018.10.007

Wet-spun poly(ionic liquid)-graphene hybrid fibers for high performance all-solid-state flexible supercapacitors

Karthikeyan Gopalsamy, Qiuyan Yang, Shengying Cai, Tieqi Huang, Zhengguo Gao, Chao Gao

MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Key Laboratory of Adsorption and Separation Materials and Technologies of Zhejiang Province, Zhejiang University, 38 Zheda Road, Hangzhou 310027, Zhejiang, China

收稿日期:2018-08-23 修回日期:2018-10-18 出版日期:2019-07-15 发布日期:2019-07-15
通讯作者: Chao Gao
基金资助:
This work is supported by the National Natural Science Foundation of China (Nos. 21325417, 51533008, and 51703194), National Key R&D Program of China (No. 2016YFA0200200), and Fundamental Research Funds for the Central Universities (Nos. 2017QNA4036 and 2017XZZX008-06).

Wet-spun poly(ionic liquid)-graphene hybrid fibers for high performance all-solid-state flexible supercapacitors

Karthikeyan Gopalsamy, Qiuyan Yang, Shengying Cai, Tieqi Huang, Zhengguo Gao, Chao Gao

MOE Key Laboratory of Macromolecular Synthesis and Functionalization, Department of Polymer Science and Engineering, Key Laboratory of Adsorption and Separation Materials and Technologies of Zhejiang Province, Zhejiang University, 38 Zheda Road, Hangzhou 310027, Zhejiang, China

Received:2018-08-23 Revised:2018-10-18 Online:2019-07-15 Published:2019-07-15
Contact: Chao Gao
Supported by:
This work is supported by the National Natural Science Foundation of China (Nos. 21325417, 51533008, and 51703194), National Key R&D Program of China (No. 2016YFA0200200), and Fundamental Research Funds for the Central Universities (Nos. 2017QNA4036 and 2017XZZX008-06).

摘要/Abstract

摘要： It is crucial to develop flexible and wearable electronic devices that have attracted tremendous interest due to their merits on compactness, flexibility and high capacitive properties. Herein we report the continuously ordered macroscopic poly(ionic liquid)-graphene fibers by wet spinning method via liquid crystal assembly for supercapacitor application. The fabricated all-solid-state supercapacitors exhibited a high areal capacitance (268.2 mF cm^-2) and volumetric capacitance (204.6 F cm^-3) with an outstanding areal energy density (9.31 μWh cm^-2) and volumetric energy density (8.28 mWh cm^-3). The fiber supercapacitors demonstrated exceptional cycle life for straight electrodes of about 10,000 cycles (94.2% capacitance retention) and flexibility at different angles (0°, 45°, 90°, 180°) along with a good flexible cycling stability after 6000 cycles (92.7% capacitance retention). To date, such a novel poly (ionic liquid)-graphene fiber supercapacitors would be a new platform in real-time flexible electronics.

关键词: Graphene fiber, Poly (ionic liquid), Wet spinning, Supercapacitors, Flexibility

Abstract: It is crucial to develop flexible and wearable electronic devices that have attracted tremendous interest due to their merits on compactness, flexibility and high capacitive properties. Herein we report the continuously ordered macroscopic poly(ionic liquid)-graphene fibers by wet spinning method via liquid crystal assembly for supercapacitor application. The fabricated all-solid-state supercapacitors exhibited a high areal capacitance (268.2 mF cm^-2) and volumetric capacitance (204.6 F cm^-3) with an outstanding areal energy density (9.31 μWh cm^-2) and volumetric energy density (8.28 mWh cm^-3). The fiber supercapacitors demonstrated exceptional cycle life for straight electrodes of about 10,000 cycles (94.2% capacitance retention) and flexibility at different angles (0°, 45°, 90°, 180°) along with a good flexible cycling stability after 6000 cycles (92.7% capacitance retention). To date, such a novel poly (ionic liquid)-graphene fiber supercapacitors would be a new platform in real-time flexible electronics.

Key words: Graphene fiber, Poly (ionic liquid), Wet spinning, Supercapacitors, Flexibility

Karthikeyan Gopalsamy, Qiuyan Yang, Shengying Cai, Tieqi Huang, Zhengguo Gao, Chao Gao. Wet-spun poly(ionic liquid)-graphene hybrid fibers for high performance all-solid-state flexible supercapacitors[J]. 能源化学(英文), 2019, 28(7): 104-110.

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Wet-spun poly(ionic liquid)-graphene hybrid fibers for high performance all-solid-state flexible supercapacitors

Wet-spun poly(ionic liquid)-graphene hybrid fibers for high performance all-solid-state flexible supercapacitors

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